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Shouldnt the name for that be 3-fluoro-2-methyl cyclopentene instead of 4-fluoro-3-methyl cyclopentene ?, if not can someone explain to me why ?
In cycloalkenes the double bond carbons are assigned ring locations #1 and #2. Which of the two is #1 may be determined by the nearest substituent rule.
Did you read the rule? Let me quote again: the double bond carbons are assigned ring locations #1 and #2. If you number the top carbon #1, then you have to go counter-clockwise for the other double-bond carbon to be #2.The carbon at the top, on the tip of the pentagon, because if you number clockwise from that carbon the methyl will be on the second carbon and the fluoroide on the third.
Oh, I see it now, so it should definately be 4-fluoro-3-methyl cyclopentene. Thanks for making it more clearerDid you read the rule? Let me quote again: the double bond carbons are assigned ring locations #1 and #2. If you number the top carbon #1, then you have to go counter-clockwise for the other double-bond carbon to be #2.